65742787 has 8 divisors (see below), whose sum is σ = 72526320. Its totient is φ = 59093760.

The previous prime is 65742769. The next prime is 65742827. The reversal of 65742787 is 78724756.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 65742787 - 2⁷ = 65742659 is a prime.

It is a super-2 number, since 2×65742787² = 8644228085054738, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65742767) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32598 + ... + 34555.

It is an arithmetic number, because the mean of its divisors is an integer number (9065790).

Almost surely, 2^65742787 is an apocalyptic number.

65742787 is a deficient number, since it is larger than the sum of its proper divisors (6783533).

65742787 is a wasteful number, since it uses less digits than its factorization.

65742787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67253.

The product of its digits is 658560, while the sum is 46.

The square root of 65742787 is about 8108.1925852806. The cubic root of 65742787 is about 403.5983390742.

The spelling of 65742787 in words is "sixty-five million, seven hundred forty-two thousand, seven hundred eighty-seven".